Synthesis and characterization of novel antibacterial silver nanocomposite nanofiltration and forward osmosis membranes based on layer-by-layer assembly
Synthesis and characterization of novel antibacterial silver nanocomposite nanofiltration and forward osmosis membranes based on layer-by-layer assembly
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DOI：
10.1016/j.watres.2013.03.018
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发表时间：
2013-06-01
期刊：
影响因子：
12.8
通讯作者：
Tang, Chuyang Y.
中科院分区：
文献类型：
--
作者：
Liu, Xin;Qi, Saren;Tang, Chuyang Y.
采用层层（LbL）组装方法，我们制造了新型银纳米复合材料LbL-Ag纳滤（NF）和正向渗透（FO）膜。在低 AgNP 掺入水平（以银计，0.22-1.19 wt.%）下，在膜中掺入银纳米颗粒 (AgNP) 不会对 NF 和 FO 工艺中的膜分离性能产生不利影响。 xLbL-Ag 膜的 FO 性能优于或与文献中报道的大多数类 NF FO 膜相当。此外，银纳米复合膜对革兰氏阳性枯草芽孢杆菌和革兰氏阴性大肠杆菌均表现出优异的抗菌性能。我们的结果表明，银纳米复合膜的性能高度依赖于膜中银的掺入，这可以通过使用不同的膜合成程序和AgNPs的掺杂来控制。据作者所知，这是首次通过 LbL 组装方法制造和表征新型抗菌银纳米复合 NF 和 FO 膜。 (C) 2013 Elsevier Ltd. 保留所有权利。
Using layer-by-layer (LbL) assembly method, we fabricated novel silver nanocomposite LbL-Ag nanofiltration (NF) and forward osmosis (FO) membranes. The incorporation of silver nanoparticles (AgNPs) in the membranes did not adversely affect the membrane separation performance in NF and FO processes at low AgNPs incorporation levels (0.22-1.19 wt.% as silver). The FO performance of the xLbL-Ag membranes was better than or comparable to most NF-like FO membranes reported in the literature. In addition, the silver nanocomposite membranes exhibited excellent antibacterial properties against both Gram-positive Bacillus subtilis and Gram-negative Escherichia coli. Our results showed that the performances of the silver nanocomposite membranes are highly dependent on silver incorporation in the membranes, which could be controlled by using different membrane synthesis routines and doping of AgNPs. To the best knowledge of the authors, this is the first study on fabrication and characterization of novel antibacterial silver nanocomposite NF and FO membranes through LbL assembly approach. (C) 2013 Elsevier Ltd. All rights reserved.